What is a Data Mart in Big Data Analytics?
A data mart is a subset of a data warehouse that is designed to support the business intelligence (BI) and reporting needs of a specific group of users within an organization. While a data warehouse is a large, centralized repository that consolidates data from various sources for enterprise-wide reporting and analysis, a data mart focuses on a particular business function or department.
Key characteristics of a data mart include:
Scope: A data mart is scoped to serve the needs of a specific business unit, department, or group of users. It contains a subset of the data found in the larger data warehouse.
Data Integration: Data marts are often populated with data that is extracted, transformed, and loaded (ETL) from the data warehouse or other sources. This process ensures that the data in the data mart is relevant and aligned with the specific requirements of the targeted users.
User-Focused: Data marts are designed with the end-users in mind. They are tailored to provide relevant and meaningful information to a specific group of business users, such as marketing, finance, or sales teams.
Performance Optimization: Since data marts are smaller in scope compared to data warehouses, they can be optimized for faster query performance. This optimization helps users access the information they need more quickly.
Autonomy: Data marts can be designed and managed independently of the central data warehouse. This autonomy allows individual business units or departments to have more control over their specific data and reporting requirements.
Flexibility: The structure and organization of a data mart can be adapted to the specific needs of the users it serves. This flexibility enables the data mart to evolve in response to changing business requirements.
There are two main types of data marts:
Dependent Data Mart: This type of data mart gets its data directly from the data warehouse. It relies on the central data warehouse for data integration and is often a subset of the larger data warehouse.
Independent Data Mart: In this case, the data mart is built independently of the data warehouse. It may extract data from source systems or other data repositories, and it operates as a standalone entity.
Data marts play a crucial role in enabling business users to access and analyze data that is relevant to their specific needs, facilitating better decision-making within individual departments or business units.
Watch video What is a Data Mart in Big Data Analytics? online without registration, duration hours minute second in high quality. This video was added by user Tech Guy Greg “TG2” 07 December 2023, don't forget to share it with your friends and acquaintances, it has been viewed on our site 4 once and liked it people.